Army · SSN history

690 Title not stated in source

Army SSN 690 was listed as deleted, with codes 518 and 1645 suggested as substitutes. This does not establish an automatic conversion to either code or a merger into both.

Codes named in this history

Codes without a directory match

  • 518 stated by the source. No directory or archive record matches.
  • 1645 stated by the source. No directory or archive record matches.

Documented history

Title not stated in source

June 30, 1945 is the publication date of Change 2 to TM 12-427, not an effective deletion date. The entry gives no deletion date.

  • The table does not state the specialty title for SSN 690.
  • No conditions are given for choosing between the two suggested substitutes.
Source extraction notes

Appendix I lists deleted SSN 690 with suggested substitutes 518, 1645. The table does not print the deleted specialty title, so the neutral title placeholder is used. The row-level deletion date is unstated. The citation dates Change 2 to 30 June 1945; that publication date is not an effective deletion date.

Source documents (1)

Reviewed September 23, 2026 against references 1 and 2.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.